TCEQ Class D Water Operators License Exam-Questions with
Correct Answers|Verified
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural
purposes. - ✔✔True
Water covers approximately ________ of Earth's surface. - ✔✔71%
Drought is an extended period when a region receives a deficiency in its ________ water
supply. - ✔✔atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking -
✔✔True
Excluding outside water use, the average household uses about _______ gallons of water
per month for inside use - ✔✔2,000
T/F: Only 3% of all the fresh water on earth can be easily accessed for use. - ✔✔False (only
1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking
Water Act from the EPA. - ✔✔True
T/F: PWS officials should be pro-active in their approach to terrorism. - ✔✔True
_________ permits the owner of a well to pump as much water as desired, even if the water
is drained from beneath the land of others. - ✔✔Rule of Capture
In Texas, agricultural water demand accounts for about ___% of the total water used. -
✔✔57%
T/F: An example of a non-transient non-community PWS is a rural school. - ✔✔True
,Monitoring average and maximum daily water ______ enables us to plan ahead for growth.
- ✔✔Demand
T/F: The Safe Drinking Water Act sets standards for drinking water including physical,
chemical, bacteriological, and radiological characteristics. - ✔✔True
"Potable" means water is safe to drink and has a measurable chlorine ________. -
✔✔Residual
The plant operator is responsible for a sufficient supply of safe and ________ drinking
water. - ✔✔Palatable
T/F: The Texas State Board of Fire Insurance requires utilities that provide fire protection to
have a minimum amount of water available based on 30 gals per person per day. - ✔✔False
(130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ. - ✔✔True
T/F: All community and non-transient non-community PWS, regardless of source of water,
must be under the supervision of a licensed water works operator. - ✔✔True
Meter readers bring in operating revenue and profoundly impact _____ relations. -
✔✔Public
The federal regulator of drinking water is the _____. - ✔✔EPA
T/F: Duties of distribution operator include repairing leaks, making taps, flushing mains, and
taking radiological samples. - ✔✔False (Repair leaks, Make taps, Flush mains, Operate
pumps, Take *bacteriological* samples)
, A service area has 1000 service connections. What can we estimate the population of this
service area to be? - ✔✔3,000 (multiply connections x 3)
T/F: The State must be notified after an existing facility is changed or after construction of a
new facility. - ✔✔False (must notify *before*)
T/F: A Class "D" license is valid for 2 years at ground and purchase water systems with 250
connections or less. - ✔✔False (3 years)
T/F: The physical characteristics of water are color, taste, odor, temperature, and turbidity. -
✔✔True
An alkaline or basic solution has a pH greater than ____. - ✔✔7
T/F: The terms mg/L and ppm are not interchangeable. - ✔✔False (they are
interchangeable)
Suspended solids in water cannot be filtered out. - ✔✔False (they can)
Solids, water hardness, pH and gases are ____ characteristics. - ✔✔Chemical
T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule. - ✔✔True
T/F: The State recommends a water pH of less than 7 to be maintained at all time. -
✔✔False (The state recommends a pH slightly greater than 7 and for the water to be non-
corrosive.)
T/F: Taste and odor can come from organisms such as vegetation, bacteria, and algae, and
from certain chemicals and metals. - ✔✔True
T/F: The deeper the well, the warmer the water. - ✔✔True
Correct Answers|Verified
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural
purposes. - ✔✔True
Water covers approximately ________ of Earth's surface. - ✔✔71%
Drought is an extended period when a region receives a deficiency in its ________ water
supply. - ✔✔atmospheric, ground, or surface
T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking -
✔✔True
Excluding outside water use, the average household uses about _______ gallons of water
per month for inside use - ✔✔2,000
T/F: Only 3% of all the fresh water on earth can be easily accessed for use. - ✔✔False (only
1%)
T/F: In 1978, the Texas Department of Health (TDH) assumed primacy over the Safe Drinking
Water Act from the EPA. - ✔✔True
T/F: PWS officials should be pro-active in their approach to terrorism. - ✔✔True
_________ permits the owner of a well to pump as much water as desired, even if the water
is drained from beneath the land of others. - ✔✔Rule of Capture
In Texas, agricultural water demand accounts for about ___% of the total water used. -
✔✔57%
T/F: An example of a non-transient non-community PWS is a rural school. - ✔✔True
,Monitoring average and maximum daily water ______ enables us to plan ahead for growth.
- ✔✔Demand
T/F: The Safe Drinking Water Act sets standards for drinking water including physical,
chemical, bacteriological, and radiological characteristics. - ✔✔True
"Potable" means water is safe to drink and has a measurable chlorine ________. -
✔✔Residual
The plant operator is responsible for a sufficient supply of safe and ________ drinking
water. - ✔✔Palatable
T/F: The Texas State Board of Fire Insurance requires utilities that provide fire protection to
have a minimum amount of water available based on 30 gals per person per day. - ✔✔False
(130 gals per person per day)
T/F: The primary state regulator of water utilities is the TCEQ. - ✔✔True
T/F: All community and non-transient non-community PWS, regardless of source of water,
must be under the supervision of a licensed water works operator. - ✔✔True
Meter readers bring in operating revenue and profoundly impact _____ relations. -
✔✔Public
The federal regulator of drinking water is the _____. - ✔✔EPA
T/F: Duties of distribution operator include repairing leaks, making taps, flushing mains, and
taking radiological samples. - ✔✔False (Repair leaks, Make taps, Flush mains, Operate
pumps, Take *bacteriological* samples)
, A service area has 1000 service connections. What can we estimate the population of this
service area to be? - ✔✔3,000 (multiply connections x 3)
T/F: The State must be notified after an existing facility is changed or after construction of a
new facility. - ✔✔False (must notify *before*)
T/F: A Class "D" license is valid for 2 years at ground and purchase water systems with 250
connections or less. - ✔✔False (3 years)
T/F: The physical characteristics of water are color, taste, odor, temperature, and turbidity. -
✔✔True
An alkaline or basic solution has a pH greater than ____. - ✔✔7
T/F: The terms mg/L and ppm are not interchangeable. - ✔✔False (they are
interchangeable)
Suspended solids in water cannot be filtered out. - ✔✔False (they can)
Solids, water hardness, pH and gases are ____ characteristics. - ✔✔Chemical
T/F: There are 2 hydrogen atoms and 1 oxygen atom in each water molecule. - ✔✔True
T/F: The State recommends a water pH of less than 7 to be maintained at all time. -
✔✔False (The state recommends a pH slightly greater than 7 and for the water to be non-
corrosive.)
T/F: Taste and odor can come from organisms such as vegetation, bacteria, and algae, and
from certain chemicals and metals. - ✔✔True
T/F: The deeper the well, the warmer the water. - ✔✔True
